Vapor phase selective hydrogenation of furfural to furfuryl alcohol over Cu–MgO coprecipitated catalysts

Nagaraja, Bhari Mallanna; Padmasri, A.H.; Raju, B. David; Rao, K. Srinivasa

doi:10.1016/j.molcata.2006.09.037

Cited by 245 publications

(155 citation statements)

References 27 publications

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“…The silica was previously treated with ammonia solution and, once properly functionalized, it was contacted with an aqueous solution of [Pt(NH 3 ) 4 ]Cl 2 with an appropriate concentration so as to obtain ca. 1 wt.% Pt on the solid.…”

Section: Preparation and Characterization Of The Catalystsmentioning

confidence: 99%

“…1 This product is widely used in the production of resins, as an intermediate in the manufacture of lysine, vitamin C and lubricants, and to obtain tetrahydrofurfuryl alcohol, among other applications. [2][3][4] Due to the large variety of products that can be obtained from the hydrogenation of furfural, this reaction represents a great challenge from the point of view of its chemoselectivity. As shown in Figure 1, in addition to the products coming from the hydrogenation of the C=O bond and/or the furan ring, there are numerous compounds derived from side reactions (hydrogenolysis of the C=O bond, decarbonylation, hydrogenation and ring opening, condensation reactions, etc.).…”

Section: Introductionmentioning

confidence: 99%

“…13,14 Concerning bimetallic catalysts, one way to obtain well-defined bimetallic phases is through controlled surface reactions using techniques derived from surface organometallic chemistry. In this regard, Zheng et al 15 have studied the hydrogenation of furfural in the gas phase using Pt catalysts, supported on NaY zeolite, modified by the addition of Sn(CH 3 ) 4 . According to their results, the use of bimetallic catalysts, PtSn/NaY, led to an increase in selectivity towards furfury alcohol compare to the monometallic catalyst Pt/NaY.…”

Section: Introductionmentioning

confidence: 99%

“…Sistemas bimetálicos, contendo diferentes quantidades de estanho, foram obtidos por meio de reações de superfície controlada entre um catalisador monometálico e Sn(C 4 H 9 ) 4 . Quando foram utilizados catalisadores monometálicos, os resultados obtidos sugerem uma relação entre as propriedades do metal e da atividade e seletividade.…”

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“…Bimetallic systems, containing different amounts of tin, were obtained by means of controlled surface reactions between a monometallic catalyst and Sn(C 4 H 9 ) 4 . The results obtained when monometallic catalysts were employed suggest a relationship between metal properties and the activity and selectivity obtained.…”

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confidence: 99%

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Transition metal-based bimetallic catalysts for the chemoselective hydrogenation of furfuraldehyde

Vetere

Merlo

Ruggera

et al. 2010

J. Braz. Chem. Soc.

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Neste trabalho foi estudada a hidrogenação quimiosseletiva em fase líquida do furfural, empregando-se catalisadores baseados em Pt, Rh e Ni. Sistemas bimetálicos, contendo diferentes quantidades de estanho, foram obtidos por meio de reações de superfície controlada entre um catalisador monometálico e Sn(C 4 H 9 ) 4 . Quando foram utilizados catalisadores monometálicos, os resultados obtidos sugerem uma relação entre as propriedades do metal e da atividade e seletividade. Todos os sistemas permitiram a obtenção do álcool furfurílico com alta seletividade (99, 97 e 76% com catalisadores de Pt, Rh e Ni, respectivamente). A adição de estanho tem efeitos diferentes sobre os três sistemas, tanto em termos de conversão quanto na seletividade. Um resultado interessante foi obtido para os catalisadores baseados em Ni, para os quais a adição de estanho levou a um aumento significativo da seletividade do álcool furfurílico e, dependendo da razão Sn/Ni, também há um aumento na atividade catalítica do sistema.In this work, the liquid-phase chemoselective hydrogenation of furfural was studied, employing Pt, Rh and Ni-based catalysts. Bimetallic systems, containing different amounts of tin, were obtained by means of controlled surface reactions between a monometallic catalyst and Sn(C 4 H 9 ) 4 . The results obtained when monometallic catalysts were employed suggest a relationship between metal properties and the activity and selectivity obtained. All systems allowed obtaining furfuryl alcohol with high selectivity (99, 97 and 76% were achieved with Pt, Rh and Ni catalysts, respectively). The addition of tin has different effects on the three systems, both in terms of conversion and selectivity. An interesting result was obtained for the Ni-based catalysts, for which the addition of tin led to a significant increase in furfuryl alcohol selectivity and, depending on the Sn/Ni ratio, also to an increase in the catalytic activity of the system. Keywords: furfural, furfuryl alcohol, hydrogenation, bimetallic catalysts, PtSn IntroductionThe hydrogenation of furfural is an important reaction in the chemical industry as it is the main way of obtaining furfuryl alcohol.1 This product is widely used in the production of resins, as an intermediate in the manufacture of lysine, vitamin C and lubricants, and to obtain tetrahydrofurfuryl alcohol, among other applications. [2][3][4] Due to the large variety of products that can be obtained from the hydrogenation of furfural, this reaction represents a great challenge from the point of view of its chemoselectivity. As shown in Figure 1, in addition to the products coming from the hydrogenation of the C=O bond and/or the furan ring, there are numerous compounds derived from side reactions (hydrogenolysis of the C=O bond, decarbonylation, hydrogenation and ring opening, condensation reactions, etc.). 3,5 In chemoselective hydrogenation reactions using heterogeneous catalysts, the choice of the active metal is a key factor, since its influence on the resulting activity and/or selectivity is wel...

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Section: Preparation and Characterization Of The Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

unclassified

mentioning

confidence: 99%

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Transition metal-based bimetallic catalysts for the chemoselective hydrogenation of furfuraldehyde

Vetere

Merlo

Ruggera

et al. 2010

J. Braz. Chem. Soc.

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Selective Hydrogenation of 5‐Ethoxymethylfurfural over Alumina‐Supported Heterogeneous Catalysts

et al. 2009

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Abstract:We report here the synthesis and testing of a set of 48 alumina-supported catalysts for hydrogenation of 5-ethoxymethylfurfural. This catalytic reaction is very important in the context of converting biomass to biofuels. The catalysts are composed of one main metal (gold, copper, iridium, nickel, palladium, platinum, rhodium, ruthenium) and one promoter metal (bismuth, chromium, iron, sodium, tin, tungsten). Using a 16-parallel trickle-flow reactor, we tested all 48 catalyst combinations under a variety of conditions. The results show that both substrate conversion and product selectivity are sensitive towards temperature changes and solvent effects. The best results of > 99% yield to the desired product, 5-ethoxymethylfurfuryl alcohol, are obtained using an iridium/chromium (Ir/Cr) catalyst. The mechanistic implications of different possible reaction pathways in this complex hydrogenation system are discussed.

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Copper Catalysts Unleashing the Potential for Hydrogenation of Carbon−Oxygen Bonds

Watari

Kayaki

2018

Asian J Org Chem

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The catalytic hydrogenation of carbon−oxygen bonds by copper‐based catalysts has made significant progress in the past decade. Broad carbonyl compounds, such as aldehydes, ketones, carboxylic acids and their derivatives, and CO2 have been subjected to heterogeneous and homogeneous catalytic systems. Although heterogeneous copper catalysts have been used in established industrial hydrogenation processes, recent catalyst design focusing on (i) novel supports, (ii) controlled nanostructure of copper species, and (iii) bimetallic active site in combination with copper have improved the productivity of the desired reduction products. With regard to homogeneous catalysts, phosphine‐coordinated copper complexes have been utilized in chemo‐ and enantioselective hydrogenation. In addition to the phosphorus ligand effect, several sp2‐nitrogen bases have recently been explored as beneficial promoters of CO2 hydrogenation.

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Vapor phase selective hydrogenation of furfural to furfuryl alcohol over Cu–MgO coprecipitated catalysts

Cited by 245 publications

References 27 publications

Transition metal-based bimetallic catalysts for the chemoselective hydrogenation of furfuraldehyde

Transition metal-based bimetallic catalysts for the chemoselective hydrogenation of furfuraldehyde

Selective Hydrogenation of 5‐Ethoxymethylfurfural over Alumina‐Supported Heterogeneous Catalysts

Copper Catalysts Unleashing the Potential for Hydrogenation of Carbon−Oxygen Bonds

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